SMC KQ Series Brass Push-to-Connect Tube Fitting, Union Wye, 1/4" Tube OD, Black Wye fitting with three openings for connecting and branching three pipes Push-to-connect fitting connects to pipes or tubing on all three ends Made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability Working pressure of up to 145 psi Operating temperature ranges from -5 to 60 degrees C This product is not intended for use in potable water systems